Which of the following statements are incorrect? Select one: a. Antibonding elec
ID: 512069 • Letter: W
Question
Which of the following statements are incorrect?
Select one:
a. Antibonding electrons are higher in energy than the atomic orbitals from which they came from.
b. At least two of the above are incorrect.
c. For the molecule NO, the molecular orbital model is preferred over the localized electron model because NO contains an unpaired electron.
d. Electrons in antibonding orbitals will cause a molecule to be paramagnetic.
e. According to the molecular orbital model, when bonding occurs between hydrogen and bromine to make HBr, the 1s orbital of the hydrogen atom no longer exists.
Explanation / Answer
Incorrect one is,
d. Electrons in antibonding orbitals will cause a molecule to be paramagnetic.
Because paramagnetic nature of substance arises due to unpaired electrons but not due to the prsence of antibonding electrons.
Correct One:
(a) Antibonding electrons are higher in energy than the atomic orbitals from which they came from.
Because antibonding orbitals are formed by the out phase overlap of atomic orbitals which cause them to have more energy than the atomic orbtials where bonding orbitals are formed by the overlapping of atomic orbitals in phase which cause them to have less energy than the atomic orbitals.
(c) For the molecule NO, the molecular orbital model is preferred over the localized electron model because NO contains an unpaired electron.
Because MO model the unpaired electron has a chance to delocalise which is responsibl for paramagnetic nature.
According to the molecular orbital model, when bonding occurs between hydrogen and bromine to make HBr, the 1s orbital of the hydrogen atom no longer exists.
Because all atomic orbitals would intermix to form corresponding molecular orbitals, no 1s orbital is remained.
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